Film-testing instrument



Jan. 15, 1924. 1,480,845

M. VIDAVE'R FILM TESTING msrnunmu'r Filed Dec. 19,. 1921 8 Sheets-Sheet 1 In In INVENTOR W ATTQRNEY Jan. 15,1924. 1,480,845

M. VIDAVER FILM TESTING INSTRUMENT d Dec. 19. 1921 8 Sheets-She et 2 FE I ATTORNEY Jan. 15, 1924.

M. VIDAVER FILM TESTING INSTRUMENT Filed Dec. 19. 1921 a Sheets-Sheet s ATTORNEY Jan. 15 1924. 1,480,845

M. VIDAVER FILM 'rssnne ms'rnuumw F'il ed Dec. 19. 1921 8 Sheets-Sheet 4 ATTORNEY Jan. 1924;v

V 1,480,845 M. VIDAVER FILM TESTING ms'rnumnm Filgd Dec. 19, 192] 8 Sheets-Sheet 5 I NVENTOR WW ATTORNEY M. VIDAVER FILM TESTING INSTRUMENT Filed Dec. 19: 1921 a Sheets- Sheet s INVENTOR ATTORNEY Jan. 15 19124.

M. VIDAVER mun 'rzs'rmc ms'rnuunn'r Filed Dec. 19, 1921 8 Sheets-Sheet 7 ob H mysmon ATTORNEY Jan. 15 1924. 1,480,845-

M. VIDAVER FILM TESTING INSTRUMENT Filed Dec. 19. 1921 8 Shuts-Sheet B INVENTOR ATTORNEY Patented Jan. 15, 1924.

unlfrno s'rATEs PATENT oFFica.

MAXWELL VIDAVER, OF NEW YORK, N. Y., ASSIGNORTO FILM INSPECTION MACHINE CQMIPANX INCL, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

' rrrm-rns'rmc INSTRUMENT.

Application filed December 19, 1921. Serial No 523,256.

T 0. all whom it may concern.

-'-Be it known that LsMAxwnLL VIDAVER, a citizen of;the United States, residing at New York,. inthe county of New York and State of New York, have invented certain new and useful Improvements in Film-Testing Instruments, "of which .-the following is a e111,. clear, and exact description, such as will-enable others skilled in the .art to which it appertains tomake anduse the szt'mei :|This..i nvention relates to instruments .for testin material'and with respecttoits more speci 0 features to instruments of thecharacter referred to for testingh-afiexible strip tolascertainwthepresence. Ofdefects, as .;for

instance, abnormally located: apertures, slits andltheililie -and the presence of abnormally locatedfstri'p imaterialitaking the place ot normal apertures. The embodiment of the invention herein disclosed-is specially adapted for testino transparent moving picture strip-popularly called film. j

- One ofIthe objectsofcthe invention is; the provision *of a practical testing-instrument, or .machine;..- of the ;kind referred *to, delicatelyiresponsive to various;difierent kinds of detects in;the stri flespecially; in.isuch;a p

.feed controlling .inec anismfl striplasalso-called'E lm:,=uti1ized in taking andprojecting =movin pictures and-especially-to idetectthe-a sence of material in the strip wherethere shouldbe material and toe detect .the pres'ence of material in the strip where :thereishouldbe no material. I

Anot hen object of the-inventibnlis the provision ,of a. simple construction -.-,to effect detectionivithout injury tothe stri and without intensifying the defects vWhic may be present inthe. strip.

zAnother' object of the invention is, the provision of a, practically operativeinstrument of the. character. referred JtOiWhlOh will perform the testing operations rapidly and without scratching 'or, otherwise marring the picture sui-face orzthe' ictu resand without removingvthe coatings .tlie strip'..

&nothe'r object; of the invention is the pro- VlSl0I1-;.0f;fl, Fmactiine; of the; character referreclto; fully, automatic in operation and i which maypbe-readilytloadecl and-unloaded v portion pgtthe .strip to. he tested, ssociated with featuregdetectors;

withothezstri p :material-. .i

.An6ther:object:ofi the invention is the provision. of automatically, operating .-machine :of-the-charaeter referred to-in which inven io r p-supp y d ic 5;

tionof detection, andthe possible lightness of construction and rapidity of movement of somc of the features directly co-operating to test the strip. 5

' Other objects will be in part ohviotis and in partpointed .out hereinafter. i

The invention accordingly consists inthe features of construction, combinations of elements and .ara'n ement of parts which will be exemplified in" the construction hereinafter set ,forth, and the scopeof the appllf cation of which will belindicated in the following cla inis. i t I In the accompanying drawings, forming P r of t i p cifi ti -wh rein sim lar reference characters refer, to "similar parts throughout theseveral views, T v

.Figuretl ,is a side elevationfpartlj' in section,.il li1strating one embodiment of the is apl'an view of Fig. '1, with the stripyxnitted;

3 'is'faside elevation, partly sectional, of. (fie feature gdetectors ;and part of the feature. detector;

Fig. 1s a ani-view of certain of the parts ofFig3; certainj parts being broken away'for clearer disc10si1re;,,;

- .Ifiisahend, detail viewg partly sectio s of anot erea ure detector a d s Ei fi the operative. connections between, the. dri vlhg'inptigr and-.thestrip take-up device;

1 9 is audetail illustrating a portion of the riving connectiojis hetween the motor a Fi%., 10 1s amen eleva-tion, partlj lsecn s -d k guidi g nd. t n ing. r lls;

. Fig. 11 i s. a dia aromatic plan viewmf 'a -r gwa adete l 9r. thtek-rdr t Fig. 17 is a transverse sectional detail showing the aperture feature 'detectois of Fig. 14;

Fig. 18 is a side elevation, partly sectional, of a somewhat different arrangement of the controlling devices from thatillustrated in Fig 3;

i 19 is a transverse sectional detail showing the aperture feature detectors of Figs. 3 and 18;'and

Fig. 20 is a detail of Fig. 18.

Referring now more. specifically to the drawings the numeral 1 indicates the bed, or frameof the machine, which may be sup ported on a table or otherwise by the depending flanges 2. On one end of the bed is cited a standard 3 in ,which is rotatively supported a horizontal strip-supply shaft 4 to which the strip-supply reel 5 removably attached to rotate with the shaft 4.

, The reel 5 carries the strip to be tested which strip, as will be'understood, will usually lie on the reelin coiled conditions; (Jo-operative with the shaft 4 is a brake for arresting rotation of the shaft and, in consequence,

rotationlof thereelt' andfdelivery of strip.

This brake mayf in clude a; brake shoe 6 ad justablv threaded on' the upper end of a vertically movable rod guided in the standard 3, one end of thero'd extending to position beneath tlie fraine 1 where it is articulated with a rod, or lever 8 adapted to fulcrum on the bracket 9. Thebrake. rod

8 may be provided with an adjustable weight 10.1 .The shoe 6 cooperates with a brake dr um 11, onthe shaft 4. The numeral 12 indicates a housing enclosing the shoe 6 and the dr'um'i 11, the shaft 4 projecting from this housing. j A

the opposite end of the'bed 1 is the standard supporting a housing 21 whicn in'turn supports shaft 22 projecting from the housing. Onth'e shaft 22 is removably mountedthe strip take-up reel 23, the reel being sleeved on the shaft 22 so as to rotate therewith. The numeral 24 indicates a motor which,- in the present embodiment, serves as the driving" device for the strip feeding mechanism and for the take-up reel 23. The driving connections from the'motor 24 to ,the take-up reel include a spur gear 25 on the motor shaft meshing with a pinion 26 on a horizontal shaft '27, Whiehshaft enters the housing 21 and is provided with a worm 28, rotatable therewith. The nutened to the clutch element 36. The reduced portion 38 of the stud 29 is encircled by a coiled spring 39, one end of which bears against the collar 36 and the other end against a head 40 of the stud. From this construction-it will be perceived that. the

take-up shaft "22 is driven from the mot'or 24 through the instrumentalityof the friction clutch element, so that, if conditions require, the shaft 22 may yield to the pull of the strip being tested so as not to rotate at a uniform speed." at 3 I.

a The strip feeding mechanism includes a pair of feed rolls indicated by- -the numerals and- 51' (Figu'f), these rolls being .rotatively supported in frame standards 52' and 53 bolted to the bed 1, one of thesestandards supporting a housing 54-for enclosing some of the driving devices for the feed. rolls. The feed rolls 50 and 5-1 are yieldingly pressed toward each other b'y spring 55, cooperating with be'aring block 56 supporting the shaft Eff-of illustrated atthele-ft in Fig. 7, this construction being duplicated at the right hand side. i The shaft of the lower feed-101151- .is indicated at 58,-and the two feedirollashafts are geared together through :the' intern'iesh ing pi'nions 59 and 60, the shaft of the lower roll being extended and having a spiral gear 61 cooperating with aspiralgear 62 'on the shaft 27 hereinbefore referredfito, this latter shaft extending-into the housing 54 as indicated in Fig. 2. The pressurebetween the feed rolls may be relaxed and the rollsseparated when desired by manipulationof the arm or handle 63 attached to the lifting arms 64 which latter maytake under the'shaft 57 so as to lift theishaft. The arms 64. extend from a rock member 65 journaled in the standards 52 and 53, the handle-63ubeing connected to said rock member; i 1

The strip of film-to betestedvis indicated by the numeral and isshown in cross-section in Fi 7. It will beseen-that the up er feed ro 50 is: counter-sunl ,-or recess'e at 71 toavoid c'ontact with the predetermined portionofthe widthof: the strip which receives the-pictiiresr- The -01150 is also provided with shoulders 72 to guide the strip as it is" fed. The lower roll 1. 1- is preferably cylindrical throughout its length so as to eifectively support the full wi th the upper feed'rroll 50,-as

Inn

fit

till

front of tlie-ieature detectors more specif-' icallyhereinafterreferred to, and in a lower plane; The-rolls -and 76 are generally similar .irl-eonstruction-=to the feed rolls hrei'h'before referred to, the upper-1011 75 beingcou'nter-sunk at '77 and having guid n shoulders 78, the two rolls beinglintergeared asihya-gearsr-at w and-80 and eing spring pressedhtqward eehother by "springs 81 onemf Whichappears's in Fig. 3.- Thefguidmg: alnd tensioning Y rolls, @however, in :the

present embodiment, rotate by rcont'aict of .the-

moi-ring strip therewith, being: unprovided withsny. positivedriving devises. ,The shaft 82 0f !the lower roll 76 is'provided with a hahdewhel '83 by which the two intergeareglrolls :may'he rotated iwhen'desired.-=

ii' 'p'ertionwf a imo'vin {picture strip is illustrated iin' .'Eig.--1;1, sum-strip being .providedwitliiaa series of normally "spaced :feed openings 85-. ada pte'd to co-operate with .the dri-i higis rockets ofra moving-picture apparatusfeit er-when the pictures-are taken or when the fareprojeeted. In theexi gencies of menu 'acture' of the strip, aswell as in the" operations. of 'takin and projecting pictures, various defects in the strip may appear; "For in stancegone of the apertures 85Ftiia17 be" ahnorm allywlarge tw'o. or three adj aeent a pertnres 8fi may a pear. as a single openingof abnormal size a slit; as 86, may appear between" 'two' or more adjacent =openings 85, or a slit may appear'in theedge of 'the"strip 'as'indicated'at'87 and such a slit in'a'yjc'ommunicate with one of the normal ajpertu-Tes85==as indicated at 88; Eaeh=and all' of these 'vario'us abnormalities may be reifiarded'fas defeets-"imthe strip. Also it is o'ftentimes found desirable to sever the strip ain'cl""rziss emble"tlie Sections either in the same or different order; Due to carelessness iii re-assembly the'proper operative contin'uitlvmf the 'strip may not be preserved. Re'as'seifihly' may be effectedby' lappingthe eiitlsfof' the strip sections andj'eausing the la' iped-"eiids' t6 atll'ie're' by suitable, usually tralii'sparent," adhesive is oollodionfl In Fig. .I.an'unilerlying"'lapping'strip section is indicated M389; the oir'erltipping end ofthis strip "hein j' indicated by the dotted i line 90.

Should the lapped arrangement be such as shq ld. .fipp er, h sp o o l'i tir'i'eht -"m'eeh anism" of the *taking' 'or projecting machine would not properlyeo-operate with the openings 85. On the contrary, strip material 66 'uiillappear and cover an opening 85 which should be open, and the consequent feed of the.strip may .be rendered inellieie'nt and improper. will be apparent .from ihe above thgit the. possible defects in thestrip ai'e'n any and varied in' character. One of ,th e main objeetspf the: present intention is the detection of abhor-J mal holes, slits and the like and thepresei 'ee of abnormal niaterialjas just referred to; One fornio'f feature detectonn ore espef cially adapted 'for detecting apertures,

holes, slitsland the like is illustrat d: in'seetion in Figs. land 19. -'lhe numeral 91i ndieates .a strip support, shown ,as' rotatable and leylindrieiil." ;,This' .suppp'rtgis rotstably mounted in the ',sta.iid? d$ .2} and"53i =i, d{in the form muses-ream the pre e embassies;fir-tes is mgn p r sh sil fi ky=.iii ld' t mi-i fiwl' th 'ms inst' i ip. hug We; seemsdetecting. oo operation with; .the strip" upon registry-with .a fi 1 9 i519 19. 6? or.the;li ke, hereinhefore referred to". Infthe embodiment referred to, two .of the pins 92 areemployedyjon for each margin offtlie strip; .T he;'pins] 92,are sprin presseitowardthe normal plane of Olijthe strip a d tr iwr qlylt e' e yi hfefsi i ig f 3 lying in .en'ings inithe.isupporhfilgthe opening re erred...to being generally ,radiiil and entered gat'one enid lby serew phigs 9 L apertured .for the passage'of ,tiip rods138, hereinafter 'more specifically: reierred to; The Sprin'gs93 "a r adapted to pause thldetector :pins 92 to project from the support 91, the @PiIlS being provided with shoulders 95 ;co-operative-ivii;-h. the. support "9.1 to .limit theextent of.projectiou:of the pin. Under ressureof a normal strip. the pins 92-1nay v e held within the roller support 91. The end of the detectorover which the strip ridesinclines toward: the surface ofthe strip in the-direction of feed, as indicatechat .196, when in-detectingflposition', so thatflie detecton pin, in thepresentembodiment. when in deteetinggposition at right angles to plane of the strip, as illustrated .in .Fig= 1. .does not present an abrupt shoulder; or! abutment, against. the -.movement of the strip. When the feature deteetor pin 92fi5 -il1 alignment with the path 0f feed of normal aperturesin the strip as foreinstance, the apestures 85, :the :dimension' of the featuredetector in the-line:offeed shouldqo-floourse comport with the dimensions; ofdthe. normaLfeed openings 85 :inathe-strip so. as to permitthe' passage of .these normal :openingsl-iwithout permittingmhe pin 92 madetectingIy cOmperaJte with the'st-ripJ In the present embodiment the dimension inthe direetion ot feed :of: the: strip :should exceed the dimension of a normal opening 85, in the same direction, so that the normal openings readily slip past the pin. Should a slit, as 86, be present, the material of the strip may yield sufiiciently to permit projection of the pin 92 sufficiently to make detecting co-o eration. It is of course to be understoo that additional aperture detectors may be applied in positions to detect such defects as the slits 87 or 88 in the edge of the strip, the pertinent dimension of the pin then in question being determined by the requirements of the defect to be detected.

The feature detector for detecting the ab sence of the normal openings, as 85, and the presence of abnormal strip material is clearly shown in Figs. 5 and 6. The numeral 97 indicates a strip support, shown as a freely rotatable cylindrical member rotatable on a stationary cross bearing 98 supported by the standards 52 and 53. One, or. a series of feature detectors, as the strip feelers, or feeler pins, 99 radially roject from the support 97, being circum erentially spaced thereon. As illustrated, the feeler ins. 99

appear at each side of the support 9 The description will be directed to one side, but is to be understood as applying to both sides.

The-numeral 100 indicates a stri feeding controller member, trip, or rod, aving a strip feeler portion, part, or lug 101 in superposed relation to the strip, and also having a tripping lug 102. As illustrated, the rod 100 is loosely supported for movement in a stationary path transversely of the axis of the support 97 and in a more or less vertical plane, so that its downward, or gravitative, movement causes the fee'ler. lug 101 to approach the strip, the extent of this motion being limited by the 'shoulder 103, which arrests the movement when the lug 101 is a short distance from the plane of the strip. At 104 is a stationary block, or guide member, in which the rod 100 is freely slidable while performing its movements. The cross bearing 98 asses through the blocks 104, the latter being pinned to the bearing 98 by the set screw 105. The rods 100 enter guide openings 106 in the blocks 104 and pass upwardly through passages 107 in the bearing 98. the heads, or lugs 101 lying in slots 108 in the-blocks 104. As will be seen, the blocks 104 serve to guide the strip in its passage over the rotatable support 97, and to hold said support and the pins carried thereby from lateral displacement so that the feed openings 85 will register with the feeler pins 99.

In operation, the strip advances under the pull of the feed rolls 50 and 51, and the en-.

gagement of the feeler pins 99 by the feed openings 85 in the strip, efi'ects rotation of the strip support 97. The pins 99 accordingly are moved in an endless circular path which intersects the normal path of the strip as it lies on the support 97, succeeding feeler pins 99 being thus brought into and out of engagement with succeeding normal openings 85. Should a normal opening be absent, or covered by strip material in consequence of lapping or patching as here intofore explained, the end of the appropriate feeler pin 99 will make detecting cooperation with the strip by contacting with the abnormally disposed strip material filling the place of such opening, with the result that the strip will be displaced from its normal path, in the present instance, lifted. The displaced strip will contact the feeler lug 101 of the controller rod 100, and will actuate this rod, in the present instance lifting this rod together with its tripping lug 102. This actuation of rod 100 will result in modifying the feed movement of the strip, and it will be perceived that this actuation is responsive to detecting co-o eration of the feelers 99 with the strip. fter the actuating feeler pin 99 has moved sufiicientl in the direction of feed of the strip, it wil leave its 'position of detecting co operation with the strip, thus permittin the strip to return to its normal path, an the lug 101 to gravitate to its original position adjacent, but slightly spaced'from the strip.

The strip support91 with which the aperture detector 92 is associated, as before explained, is carried by and rotates with the shaft 110, and to one end of this shaft is attached a device as the handle or crank 111, providing for convenient manual rotation of the strip support 91, and in consequence, manual rotative, translation of the aperture detector 92. It will be perceived that by the construction described, the detecting pins 92 are mounted for reciprocation as well as os cillation. in'a rotary path.

One of the. means or mechanisms, actuated by detecting co-operation of the feature detectors with the strip, for controlling the feed of the strip will now be described, reference being made -more especially to Figs. 1 to 6 inclusive. The motor 24 is electric and, through the connections hereinbefore described, drives not only the strip feeding mechanism, but the strip take-up reel. The driving circuit for the motor mcludesthe conductors 115 and 116, Fig. 3 a motor controlling means being provided to vary the operation of the motor. In the present embodiment the motor controlling means is indicated diagrammatically at 117 and includes a switch, or switch arm, 118 which, in the position illustrated in Fig. 3, is open so that the motor 24 is cut oil from the supply of energizin current. In the position of the switch i lustrated in Fig. 1, the circuit is completed through theconductors 115 and 116 and the electric motor 24 is running.

The numeral 119 indicates a generator l6 also 't'o apply the brakes 45 that of of the feature detectors with the strip, contact will be broken between the PIHS 127 and the contact plate 135; the electro-magnet 121 will be de-energized; the potentializcr 145 will rotate the strip support 91 together with the aperture detector-92 in the direction of feed of'the stri and the rod 151 may not only be urged dbwnwardly, due to its'fconnectiori through the support 91 with 10 the s ring 1&5, but said rod 151 will also ravitate downwardly. The result of the descent of thefrod 151 will be to throw the switch 118 so as to cut out the electric motor from the supply of cner i'z'mg current and libe 6 to the brake drum 11 so asto retard or arrest supply of strip to the detecting instrumentalities. The deenergizin'g of the motor 24 will also result in cessation of operation of the feedin mechanism and the strip t'ake-up device.

it will be'noted that after detecting cooperation and the control'of the variousdevicesin consequence of such co-operation, the tods'lOQ will: automatically move to po 25 sitionj'for; a succeeding co-operationwlth 'the'inter'rupto'r' aims131 and 132, whereas the aperture detector 92, together with the stripsupport 91 'in'which it is mounted, will have rotated injthe general direction of so feed of the 'strip' so thatthe tail 138 of the aperture detector will have been displaced from imminent co operative relation with 'tfh'erarm's 131 and 132. The positionof the tai l "of .the.aperture detector will be as then generally'illustrated in Fig. 3i It will be 'furthei; note d that the movement of the aperture detector in the direction of feed of the strip will release this detector from detetitingco operation withthestrip' the ap 40 erture' detector moving- -imacircu arpath adiiallywithdrawing from the aperrodsf138. iflhus the singlemanually operati;\ze; devic',' or, handle: 111, may be used to grassy-the: feature detector to detectin positiong't ogut', in the electric motor, wit 1 consequentjpnergiz'ationl of the electro-magnet,

'sothat'thearmatiildhwill hold the aperture detec toi in detecting position; to set the 'potenti'aliaejr, or spring 145, in potentialized condition 'and to" release the brake of the strip'supply' device. Also the resetting re- '-sults in energizing the feeding mechanism and starting the operation ofthe take-up J In fFigs. 10, 14:, 15,16 and 1'( some modification's ofthe device are illustrated. The

aperture detector (Figs. 14 and 17) includes the two detector pins 160, the detecting ends of which are similar to those of the aperture detector pins 92. In Fig. 17, however, the tail 138 is omitted and the holes in which the pins 160 lie are closed by the screw plugs 161. In constructing an instrument in accordance with the showing in these figures the electro-magnetic device 121 of the other embodiment may be omitted. The means illustrated in Fig. 14 for holding the aperture detector in detecting position, consists of a pivotally mounted shaft 162 having a handle 163 and a dog 164 which latter cooperates with a tooth 165 oi a radial arm 166, movable with the strip support 167, which latter is similar in eneral construction and operation to the strip support 91. Rotative with the shaft 162 are the fingers 168, the lower ends 169 of which lie close to the strip, and preferably directly opposite the aperture detectors 160. The fingers 168 are provided with extended portions 170, the lower ends 171 of which lie close to and directly 0pposite the point in the endless path of the feeler fingers 99 where the latter make detecting co-operation with the strip. In Fig. 14 the parts are illustrated in detecting position. When either the feeler fingers 99 or the aperture detector 160, as illustrated in Fig. 14,'make detecting co-operation with the strip, the finger or fingers 168 will rotate on their pivotal axes so as to freethe' do 164 from the tooth 165,-thereupon the rod 151 will gravitate downwardly and actuate the motor controlling switch 118, to out out the motor 24, at the same time actuating the brake rod 8 to ap 'ly the brake to the strip supply device. he position of the parts'after' detecting co-operation is illustrated in Fig. 15.; The set screw 172 may be utilized to determine the detecting position of the fingers 168 and 170 relative to the strip. In the form just referred to it will be understood that the generator 119 and the electro-ma net 121 may be omitted. But it is also to e understood that the operative connections between the electric motor 24, and the feed mechanism and the take-u device, are as explained in connection wit the embodiment previously described;

In Figs. 18 and 20 the specific arrangement of the controlling connections between the feature detectoss and the motor is varied somewhat from that illustrated in the embodiments previously described, Referring to Fig. 18, the electro-magnet instead of being disposed beneath the bed 1, as illustrated in Fig. 3, is supported on a bracket 180 fastened to the upper part of the standard 52, the ma et being indicated at 181. The armature or the magnet in this position is indicated at 182 and is mounted directly upon an arm 183 on the shaft 110. Also in the arrangement illustrated in Fig. 18 the generator 119 of Fig. 3 is omitted and the electro-magnet c into and outof ClI'CUIlZ wi mains 184 and 1 ha-ving'thearm to one brush the other brush 190 a' con the clectro magn contact 'jpins 12 t as explained in 1 connection mbodimentg anotherconthe 'other contatt coil 194: in series with and 187. More or'-'l'ess" 'rown in by moving the r the resistance coil withitlie previous e doctor-. 193 leading from pin 1'27. to a resistance the condii'ct'ors'186 resistance-may be'th contact point 195 ove 194 as will be' understood. 1 When the handle onr theposition'shown in 82' will Bebe moved 118;will

I1j1 i S elevated 'fr Fig. lathe armature-1 to the electro inagnetltfljthe arm establish the current-from c1185 't'o the conductors 186 1 the reading mechanism and tii'e takegupreelfad also sufiicient current the -ciicuitiof-the electrt z'e'the' Iattei'faiidE attract the armature so as .to hold thiiiyibitxir-de- -as'-'hereinbefore ejtecting 'co o erati'on of 'ft'letecto'rswith the strip 39 'be elevated mi the mains- 184?,an

and 187. Th'nfs s z d wav fed carrying with it "ergiz'e the-motor 'magn guiding and 76 and the feed r may be located at 117 as 118 for co-opera 'r i'n' assess assented: alpha-- eitherolfthe'featur'e the current interrupting-device willbe ac- 85' through rod 151.

et l8l, a con sition oller 51, respectively.

onnected tobethrown th the electric a switch which before mentioned tion with the Thearm the terminals of the also with the termi- 186 and 187, so-that the position indicated cut off current from 5 through the con- 187, which latter lead to d diagrammatically at 188, d that the motor 188 is d with theieed rolls and l in themanner hereinhe conductor'187 leads otor and from ductor191 leads to ductor 1'92 leading'from"theelectrmmagnet to 'one of the g magnet"yiil1"be= de-energized andthe'sti ip support 91' permitted to rotate in thedire'ction- 'of-fe'ed 'of the strip the. aperture detectors. The 'rod' 151' "will- "therefore" descend and ""thibw' out'the switch sane-ea as tode-en- '188 are cut ofi 'th'e' eIectrocurrent? The 18 is-indicated being fastened at one 198-o'n'thei shaft 110 to the-frameor to the o'f "permitting" the rolls; a'nd 76 to influence: bi the s'tri be connected through i a driving belt"199 the 'tension roller This -to break the circuit.

aroller 210 which may Fig. 1, serve to retain Azs wil-l be instrument provides-a very delicately re "SPODSIVB mechanism the therewith, but the moving strip device illustrated 202 indicates a horizontal shaft supported by a' portion of the block 201, and serving as a pivot for two steel arms 203, 203, the left hand ends of which, viewed in Figs. 18 and 20 are adapted to move into and out of contact with the terminal pins172. The right hand ends of the arms 9.03 carry insulating, or fiber shoes 204 with which the lugs or feet 102 and 137 of the strip material detectors and the aperture detectors are adapted to contact for actuating these arms The numeral 205 indicates a conducting sleeve separating the two arms 203 and making contact therewith, the conducting circuit for the electro-magnet including the sleeve 205.

At the left hand end of Fig. 1 is indicated he used to wax the strip at the marginswhere the sprocket openings appear or which mi ht be covered with felt to free the strip of dust, etc. The numeral 211 indicates a table disposed beneath-the'strip.- When a defect appears the strip maybe conveniently manipulated on this table and the defect corrected orhthe strip patched or otherwise repaired as may be desired. 1

The shafts 4 and 22011 which the supply reel and take-up reel are mounted-are .provided'with. convenient devices as thepivoted into position in linewith the shafts to permit which, in the angular position: illustrated the reels on the shaft.

perceived, .eacli.-foi-m of the for detecting defects and for controlling the stri inconsequcnce of detecting co-operation oi the feature do tectors therewith. There is very little chance forthestripi to be injured in consequenceof engagement by the feature detectors. Especially is this chance lessened in the case of the aperture detector.- Not only do potentializer springs or the gravitative rod, or both, potent-ia-lizethe detector for im mediate movement in. the direction of feed of the strip upon detecting co-operation itself, as it passes over and in contact with the strip supports 91 and 97, tends to rotate these sup rts and thus assist in the movement of the detector with the trip. .The potential izing spring-and the potentializing. rod 15L however, furnish a means, independent of '--members 212 and 213; which may be thrown-- llfi the strip itself, for potentiulizing the move ment of the aperture detector. The electromagnetic device 121 serves both as a means to hold the detector from movement with the strip, and also as a means ior'releasing the detector for movement with the strip. It will be seen that the potentializer springs and the rod 151 are, in effect, mechanical motors which serve to potentialize the aperture delectorifor movement and whichare each automatically set in poteutialized con dition by resettingof the instrument as hereinbefore explained. 1

The defects in a moving'picture strip are of many different kinds; and it is to be understood that the present'invention contemplates the disposition of feature detectors at such points as to de-tectingly co-operate with defects other than hereinbefore mentioned. One, two, three or four or more detectors n'i-ay be employed, either on the same or different margins of the strip as the exigencies of the case may require. Too great flexibility of a strip may be a defect under certain Iconditionspand the. mechanisms hereinbefore described are adapted to respond to weakness of the strip and to cause arrest of the feed mechanism when the weak part of the strip registers vwith the feature detector 92, so as to: permit. detecting cooperation movement thereof.

Thus by the above: described construction is .accomplished amongothers; theobjects hereinbefore "referred to. i

As many changes could be made in-,the above construction and many apparently widely different embodiments .of this, invention could be made without departing from the scope thereofiit is intendedtliat all'r'natter contained in the above descriptionor shown in the aocompanyingxdrawings shall be interpreted as illustrative and vnot in;a limiting sensem- It is also to be? understood-i that the lanfrom detecting cooperation with the strip, and means adapted to hold said detector against such movementpending detecting co-operation with the strip.

3. In a strip testing instrument in combinatioma feature detector adapted to move bination, strip feeding means, a feature detector adapted to move in the direction of "feed of; the strip, means adapted to potentialize said detector for such moveznent and -means actuating said last-named means-upon. a feature being;' detected in said strip.

5. In ta strip testing instrument .iIicombination, afeature detector,- adapted to move -.in the direction, ,of-ifeed 0f, vthe strip, means stdapted to, pote tialize, said ,detectorllfor such -mqvement means ,hold said detectoragainst suchii novement pending detecting, cooperation ,,with; the, strip, and

adapted to releaselsaid detector from said holding means upon said detecting coor.

v. 1 S p, means p ed pq entralige said dt t f such movement, means, adaptedtoliold e e tq aga ns uch tem t; pen-e.

tecting; co operation -Witl1' 'e' strip; means adapted to a release. det ector frorn: said holdingmeans upon sa d. detecting, n t: d; mea s w e e y sue move i nt' guage used in the following claims. is; in-

tended to cover all-of thege-nericand specific features of the invention:,here1n.de-

' scribed, and all statements of-the scope of the invention whicluasama'tter of language mi ht be said to {all therebetween.

fiaving described my inventiomwhatl claim as new and desire to secure by Letters 1n he direction of feed, oi, the strip, means Patent is 1 1. In astrip testing instrument, 111.combination, a feature detector adapted to move in the direction of feed of the-strip, means in the direction of feed of the strip, meanswhereby such movement releases the detector in the -,d ircctiOD. ,Qfif cd, of the. strip, means ing co-pperation irvith gthet strip;

- 8;.111 S ip testing instrument, in nation, a feature detector. adapted tom qve adapted to holdfsaid 'detectdr: aga1rist such movement pendingii detecting" cooperation with'the-strip,-means adapted to release said detector-from said holding means upon said detecting t c-operation, and means'whereb resetting. Qfsaiddetector to detecting position is adapted'to restore-the holdof said holding,means-thereong 9. In a strip ,testing. instrument, incornbination, strip feedingmeans a f ea.ture detector'ada ted to move inlt eidirectiomof the feed 0 the strip, means adap ed toliotentializc said detector for such movement, means ada'pted'to holdsaid detector against such movement ending dete'cting'cooperation with the strl'p, means whereby resetting of said detector to detecting position sets said potenti'alizer in potentialize'd conditioii and means whereby a defect in said strip in itsp'assage through said instrument will tion, and means whereby resetting'of said detector to detecting'position sets said p0- tentializer in potentialized condition.

11. In a strip testing instrument, in combination, a feature detectdr adapted -to move in the direction of feed'of thd-strip,'-means adapted to potentia'lize said-detector for such movement, means adapted to hold said detector against'suchinovement pending detecting co-operation with i the" strip, .means a'da ted to release'said detector from said 1101 ing meansupon said detecting c'o-opera tion,'-= means whereby such' morement releases the detector from detecting; o-oper'a'tion with'the strip, and means whereby resetting of said detector to de ectin position sets said 'pote'ntializer in potentia zed-condition.

'12." In a "strip testing instrument, in combination, stri feeding means, a feature detector adapted to mojvefin the direction of feed of -the- "strip, means-adapted 'topote'ntializesaid; detectorwfor" suclr'mbvement, meansadapted' to hold said detector against such moirenient' pending-detecting .coopera' tio'n virith the strip,-means' ifihereby;a defect insaid 's'tripin its passage through said in-;

strument willcause'a' release-ofsa1d holding. means and theretiy release the detector from detecting co-operation ivith 'ithe strip, and means whereby resetting of said detector to detctin -position sets said potentializer in potentia lized condition.

T3. In a strip testing instrument, in combin'ation afeature detector adapted to move in t he direction of feed of the-str-i means adaptedto hold'said detector against such movement pehdingdetecting co-operation with the strip, means adapted to release said detector from said- =holding means upon said detecting co-operation,- means adapted to p0 tentialize said detector for such movement, and meanswhereby resetting of said dete'ctor to detecting position restores hold of said holdin means thereon and sets, said dtentiafizer potentialized! condition.

14. In astrip' testing instrument, in combinations-feature detector adapted to move in the direction of feed of the strip. means adapted to hold "said' detector against said movement pending detecting co-operation with the strip, means whereby such'movemcnt releases the detector from detecting cooperation with the strip, means adapted'to release said detector from said holding-= means upon said detecting cooperation, means adapted t'o potentialize said detector. for such movement, and means wherebyre-. setting of said detector to detecting position restores hold of-said holding means thereon and setssaid potentializer in potentialized condition, i

15. In a Strip tBStiIlg instrument, in com bination, a feature detector adapted o move in the direction of feed of the-strip, means adapted to potentialize, saiddetector: for

such movement, means adapted to holdsaid, detector against such movement pending detectingco-operation with the strip, means adapted to release said detector from said holding means upon said detecting col-oper ation, and a singl manually. operative device to reset said feature detector to detecting position, restore hold of the holdingv means'thereon and set said potentializer in potentialized condition 16. In a strip testing instrument, in combination, a feature detector adapted, to, co-

operate with a strip andupon-encountering,

a defect therein toimove inthedirection,of feed of the strip, strip, feeding mechanism,

and means whereby resetting of said, (113.

tector to detecting position is. adapted-- to energize Said ieedingmechanism. 1

17 In a strip test1ng .instrument, in combination,;a feature detector adapted to more in the direction of feed of jthe, strip,, strip feeding mechanism, and neans whereby V r,c.-, setting of said d tector; todetecting position is adapted to energize said; feeding mocha: nism imd-hold said detector-in, detecting. positionl" 1 iiil ti'li'.

. 18.1w a strip testing instrument, in combinatiomaLfea-ture detector adapted to inove in .thedirection of feed oi the strip, strip feeding mechanism,' andmeans whereby. "re.- setting of said'detector to detecting position is adapted to energize said feedingmechanism, hold said detector indetecting pos tion, and .potentializesaid detector for movement in the direction offifeedoithe strip: a j

19. In a. strip testing instrument, incomr bination, a feature detectomadapted to move-in the direction of; feed otthe'strip, means includin 'fl-Il electro-magnetiti deyice, adapted to hold said a detector: against such movement .p'ending detecting jco-o eratiou with the strip, and means adapts, to re lease said detector from said,holdi ng means upon saiddetecting co-operation.,;-,f 20. Ina strip testing instrument, in co nbination, a feature detector adapted to, more *lit 'f l,

' ing detecting' cooperation with. the strip,

means" adapted to =p'otentialize said detector for such-movement, including an electromagnetic device adapted i -to l10l d S8,id"P0tB).ltializing' means I in potentialized condition and *Ineans whereby a: defect in said strip in its "passage through saidvinstrume'nt' will eflect 'ajrelease of said holding means. P 2 2fln a strip' testing instrument, in combination, a'feature'detector adapted to more in-Tthe'direction of feed-of the strip, means adapted to hold said detector agarnst such movement ending detecting co-operation with the strip, means adaptedjto release said detectbr from said holding means upon said a movement with the strip, means adapted to releasevsaid detecting"eo-operation, and means adapted to'potentialize said detector for such moveni"nt,' {including an electro magnet'ic "device addpte'dtohold said potentializing means in poten'tialized condition,

23. In astrip' testing'mstrument, in com-.

bination, a featu're detector adapted to move in, the direction of feedof the strip, means adapted-t6 hold said-detector against such movement- *pending detecting =co-operation with-the strip, means adapted to release said detector from said holding means upon said detecting (o-operation, and means adapted to potentialize said detector for such-move:

inent, "includingan electro-ma 'netic device adaptedto hold said potentia lizing means in" otentialized condition, said electromagn'et crdevice being an element of said detectorholding means. i

In a strip testing instrument, in combination, a feature detector'adapted to move in the'dire'ction of feed of the strip, means adapted to hold said detector against such pending detecting co-operation detector from said holding means upon said detecting co-operation, and means adaptel to potentialize said detector-for such movementfincluding an electro-ma etic device,

' 1 adapted to hold said poteutia izing means in potentialized condition, said electro-magnetic device being an element of said detector holdin means, said detector releasing means inclu mg a current interrupting device-in the circuit of said electroma'gnetic device. I

25. In a strip testing instrument, in combination, a feature detector adapted to move in the direction of feed of the strip, means, including an electro-magnetic device, adapted to hold said detector against such movement pending detecting co-operation with the strip, means adapted to release said detector from said holding means upon said detecting co-o eration, and means whereby resetting 0' said detector to detecting position 1s adapted to cause. said clectro-magnetic device to hold said detector from saidmovement.

26. In a strip testing instrument, in combination, a feature detector adapted to move in-the direction of feed ofthe strip, means, including an ,electro-magnetie de vice, adapted to, holdsaid detector against such movement pending detecting co-operation with the strip, means, including a currentinterruptingdevice in the circuit of said electro-magnetic device,-adapted to re- Jease' said detector from said holding means upon said detecting co-operation, and means whereby resetting of said detector to detecting position is adaptedto actuate said current interrupting device and said electro-magnetic device to complete the circuit throu h the latter. I

27. n a strip testing instrument, in combination, avfeature detector adapted to move inathedll'OtiOH of feeds of the strip, means, including an electro-magnetic device,

ill)

adapted to hold saididetector against such movement 1 pendin detecting co-operation with the strip, an means, including a current interrupting device in the circuit ,of said electro-magnetic device,'adapted to release said detector from said holding means upon said detecting co-operation, and a detector potentializing device adapted to be held in potentialized condition by said electromagnetic device and to be operative upon the release of said holding means.

i 28. In a strip tcstinginstrument, in combination, a feature detector includinv one or more strip feelers movable into and out of predetermined openings in a passing strip and, in the absence ofsuch openings, adapted to contact with the strip material filling the place of such opening, to thereby wproduce detecting co-operation with the strip, and a strip feedin controller member adapted to be actuated in response to said detecting cooperation.

- 29. In a strip testing instrument, in c0mbination, a feature detector includin one or more stri feelers movable into an out of (predetermined openings in a passing strip an detecting co-operat'ion, including a strip ieeler portion superposed relative to the strip.

30. In a strip testing instrument, in combination, a feature detector including a series of strip feelers movable in an endless path intersecting the normal path of a passing strip, and a strip feeding controller member including a stri feeler portion adapted to be actuated by displacement of said strip from its normal path by one of said detector strip feelers.

31. In a: strip. testing instrument, in combination, a feature detector includin one or more strip feelers movable into an out of predetermined openings in a passin' strip and, in the absence ofsuch openings, a apte to contact with the strip material filling the place of such opening, to thereby produce eteeting co-operation with theStrip and a strip feeding controller member including a part adapted to be actuated by displace ment ofthe strip from its normal, path: by said feature detector.

32.-In a strip testing instrument,-in 00-mbi'nati'on, a feature detector includin one or more strip feelers movable into an out of predetermined'openings in a passing strip and, in the absence of such openings, adapted to contact with the strip material filling the place of, suehopenings, to thereby produce detecting co-operation with the stu and a strip feeding controller-"member inc uding a part adapted to be actuated by'aiisplacement ofthe strip from its normal path by said feature detector, said part being adapted to move toward the plane of the stripafter said actuation. Q l v 33. In a strip testing instrument, in combination, afeature detector including one or more strip feelers movable into and out of. predetermined openings in a passing strip and, in'tlie absence of such openings, adapted to contact with the strip material filling the lace of such openings, to thereby produceete'cting co-operatlon with the strip, and a strip feedin controller member including a, part adapte to be actuated by displacement of the strip from itsnormal path by said feature detector, said part being adapted -to -move toward the plane of the strip after said actuation, and means adapted to arrest said movement of said part, to position said part a short distance 'fromt'he passing strip.

34. In a strip testing instrument, in combination, a rotatable strip support including a. series of radially Projecting circumferentially spaced stri eeler pins, and a strip feeler rod mova le in a stationary path transversely of the axis of said support upon displacement of the strip to be tested by one ofsaid pins.

35. In a strip testing instrument, in combination,a rotatable strip support including a. series of radially projecting circumferenlially spaced strip feeler pins, a rod having a. strip feeler movable transversely of the path of the Strip upon displacement of the strip to be tested by one of said pins and a stationary guide for said rod.

36. In a strip testing instrument, in combination,a rotatable strip support including a series of radially projecting circumferentially spaced strip fecler pins, a rod having a strip feeler movable transversely of the path of thestrip, and a stationary guide for said rod, said rod being adapted to gravitatively move in said guide to cause said strip fecler to approaclrthe plane of the strip. 3 In a strip testing instrument, in combination, a rotatable strip support including a series ofradially projecting circumferentially spaced strip feeler pins, a rod having strip feeler 'moyable transversely of the path of thestrip, astationary guide for. said rod, said rod being adapted to ravitatively move insaid guide to; cause saicl strip trader to ,approaehathe plane, of the .strip, strip feeding mechanism, and means whereby actuation of said rod by said strip arrests actuation of said strip feeding mechanism.

38. In a strip testing instrument, in combination, a feature detector, strip feeding mechanism including, a pair of feed rolls adapted to frictionally grip, and feed the strip and positioned to one side of said detector andmeans, actuated upon the detector encountering a defect in said strip, adapted...

to discontinue the operation of said rolls. 39. In astrip testing instrument, in combination, a feature detector,'strip feedjn mechanism, a drivingdevice for said fee mechanism, a controller for said driving device, electricallycontrolled means for actuating. said controller including a member pivotally movable to make and break the circuit of said electrically controlled means, said member adapted to gravitatively move to make the circuit, and .means including a trip, adapted to be operated by detecting cooperation of said detector with said strip, for moving said member to break the circuit.

40. In a strip testing instrument, incombination, a feature detector, strip feeding mechanism, means, actuated by detecting cooperation of said detector with said strip, adapted to control said feeding mechanism, a strip take-up reel, a motor, and driving connections from said motor to said take-up reel including a friction clutch. 41. In a strip testing instrument, in combination, a feature detector, a strip feeding mechanism, means, actuated by detecting coopera. tion of said detector withsaid strip, adapted to control said feeding mechanism, a strip take-up reel, a motor, driving connections from said motor to saidtake-up reel including a friction clutch, and driving connections: lietween said motor and said [ceding mechanism.

42. In a strip testing instrument, in combination, a feature detector. strip feeding mechanism, a controller for said mechanism, a mechanical motor, operatively connected to wtltl controller, means adapted to hold said mechanical motor in potentialized condition, and means. actuated by detecting co-opera tion of said feature detector with said strip,

adapted to release said holding means to permit said mechanical motor to actuate said rontroller.

43. In a strip testing instrument, in comhination, a feature detector; strip feeding nuechui'iism, an electric motor adapted to actuate said feeding mechanism, an electric motor controlling means, a mechanical motoi: operativcly connected to said controlling means, means adapted to hold said mechanical motor in potentialized condition, and means, actuated by detecting co-operation of said feature detector with said strip, adapted to release said holding means to permit said mechanical motor to actuate said controlling means. 44. In a strip testing instrument, 1n combination, a feature detector, strip feeding mechanism, an electric motor adapted to actuate said feeding mechanism, an electric motor controlling means, a mechanical motor, operatirely connected to said controlling means, means, including an electro-magnet, adapted to hold said mechanical motor in potent-ialized condition, and a current interrupter, for the circuit of said electro-magnet, adapted to be actuated on detecting co-operation of said detector with said strip.

45. In a strip testing instrument, in combination, a feature detector, strip feeding mechanism, an electric motor adapted to actuate said feeding mechanism, an electric motor controlling means, a mechanical inotor, operatively connected to said controlling means, means, including an electroanagnet, adapted to hold said mechanical motor in potentialized condition, a current inter-r rupter, forthe circuit of said clectro-magnet, adapted tobe actuated on detecting cooperation of said detector with said strip, and a generator, for the circuit of said electro-magnet, driven by said electric motor.

46. In a strip testing instrument, in combination, a feature detector, strip feeding mechanism, a controller for said mechanism, a mechanical motor, operatively connected to said controller, means adapted to hold said mechanical motor in potentialized condition, and means, actuated by detecting co-operation of said feature detector with said strip, adapted to release said holding means to permit said mechanical motor to actuate said controller, said feature detector bein adapted to move in the direction of feed of the strip upon detecting co-operation therewith.

47. In a. striptcsting instrument, in com hination, a feature detector, stri feeding mechanism, an electric motor at apted to actuate said feeding mechanism,-an electric motor controlling means, a amechanical niot-or, operatively connected to said controlling means, means adapted to hold said mechanical motor in potentialized condition,- and means. actuated by detecting co-operation of said feature detector with said strip, adapted to release said holding means to permit said mechanical motor to actuate said controlling means, said feature detector being adapted to move in the direction of feed of the strip upon detecting cooperation therewith.

' 48. In a strip testing instrument, in 'com--.

bination, a feature detector, stri feeding mechanism, an electric motor a apted to actuate said feeding mechanism, an' clectrio motor controlling means, amechanical motor, operatively connected to said controlling means, meansyincluding'an electromagnet, adapted to hold 's'aidmechanical motor in potentialized condition, and'a-current interrupter, for the" circuit of said electro-magnet, adapted to be actuated on detecting-cooperation of said detector'with said strip, said feature-deteetor dieing adapted to'move in the direction of feed of the hstrip uponf detecting co-operatioxithers 49. In a strip testinginstrument, in combination, "afeature detector, strip feeding mechanism; a. controller for said mechanism, a mechanical motor, 'operativlfconnected to "said cont-roller, means-j adapted '-to' hold said mechanical motor in otentialized'crbndition, and means; actuat by detecting cooperation of sajdfe'ature-detector with-said strip, adaptedtorelease said holding means controller, said feature detector bein adapted to move ln the direction-of feed hi the' strip upon detecting co-oper ation therewith', and means whereby i said mechanical motor is ada'. 'tedto moves'aid feature det'eetor in the irectiori-of feed of the strip.

50. In n st-rip testinginstrument, in combination, a. feature detector, strip feeding mechanism, an electric motor adapted to actuate said feeding mechanism'yan electric motor controlling 'means, 11 mechanical motor, operatively connected; to said controlling means, means adapted to hold said mechanical motor in potentialized condition, means, actuated by detecting co-operation of said feature detector-with s'aid strip, adapted to release said holdingmeans to permit said mechanical motor to actuate said controlling means, said feature detector being adapted to move in the direction of feed of the strip upon detecting 'co o era tion therewith, and means controlle by said electro-magnet adapted to permit of t'oigermitlsa'idmechanical motor to actuate Sci 

